Affiliation
Department of Microbiology and Infectious Diseases, University of Calgary, Calgary, Alberta, Canada

Competing Interests

The authors have the following interests. This research was partly supported by the Westaim Corporation, and SL holds the Westaim-ASRA Chair in Biofilm Research. There are no patents, products in development or marketed products to declare. This does not alter the authors' adherence to all the PLOS ONE policies on sharing data and materials, as detailed online in the guide for authors.